Electric vulcanizer.



C. A. PFANSTIEHL.

ELECTRIC VULCANIZER.

APPLICATION mm mum. 1913.

1,139,069. Patented May11,1915.

parts CARL A. PFANSTIEIIL. OF NORTH CHICAGO, ILLINOIS.

ELECTRIC VULCANIZER.

Specification of Letters Patent.

Patented May 11, 1915.

Application filed March 8, 1913. Serial 110. 752,860.

To (17/ wr /mm it may concern:

lie it lcnown that I. CARL A. PFANSTIEIIL, a citizen of the United States, residing at Xorth Chicago. in the county of Lake and State of Illinois. have invented a new and useful Improvement in Electric Vulcanizers, or" which the following is a specification.

l-ly invention relates to certain new and useful improvements in electric vulcanizers, and is fully described and explained in the specification and shown in the accompanying drawing, in which- Figure l is a top plan of my improved device; Fig. 2 is a side elevation; Fig. 3 is a plan of blank from which the heated jaw and its handle are formed; and Fig. 4 is a section on the broken line 4 of Fig. 2.

Referring to the drawing, 5 is a metal casing or box closed by a plate 6 upon which are mounted binding posts 7 through which current is led by conductors 8. The box is integral with a handle 9, all the being stamped up of the single piece of sheet-metal, originally of the form shown in Fig. 3. The handle is, as shown, bent into a channel-shaped form which is quite stilt and also forms a conduit through which the conducting wires may be led, pins 10 being prorided beneath which they may be passed to hold them in position. The four sides of the box are bent in an obvious manner, two cars 11 projecting above the line of the top surface thereof when formed, said ears being perforated to receive projections on the top 6 which said projections enter the ears so as to hold down the forward edge of the top. The rear of the top is held down by a screw 19. so that the entire metallic box and integral handle require no machine work, or assembling. except the setting of the one screw.

\Vithin the box thus formed is a heating element which may he of any ordinary form. The intended purpose of the present device is to afford means whereby the operator of an aut mobile may make a vulcanized repair while under way. For this purpose the ordinary source of current in the automobile must be relied on and, in practice, this means that the heating element must be so designed as to produce the requisite heat on a o-volt current, and as a practical matter, present device will doubtless be wound ll. in that way.- although, of course, I do not intend to limit myself to any such requirement, since the resistance of the conductor depends merely on the source of current available and in this particular case this happens to be the voltage obtainable.

13 is the opposite jaw having a handle 14, this member being perforated for the passage therethrough of the member already described, a common pivot beingprovided at 15. On the end of the jaw 13 is loosely mounted a. contact-plate 16, which is, in form, a flat plate having two rounded protuberances or buttons 17 from which project pins 18 running through thejaw 13 and upset or expanded at their lower ends, but not riveted tightenough but that the contact plate has some play to accommodate itself and remain parallel to the opposing surface of the heated box whatever he the thickness of the interposed material.

For the purpose of firmly clamping and holding the material to be operated upon, one of the handles is provided with a screw 19 passing through a perforation in the opposite handle, said screw carrying a wingnut 20 for clamping purposes.

T he manner in which the present device works will be readily understood and it will be seen that it is a peculiarly cheap, simple and convenient appliance. It is particularly desirable for use in connection with an automobile since it will be possible to make a thoroughly satisfactory repair of an inner tube while under way. Thus, it will be necessary to carry only one extra inner tube instead of a considerable number as is now the practice. \Vhen an inner tube is punctured. a second tube can be inserted, and the punctured tube firmly and satisfactorily vulcanized immediately without interfering with the progress of the car in any way.

I am aware that considerable variation is possible in the details of the construction herein shown, and I do not intend to limit myself thereto except as pointed out in the following claim in which it is my intention to claim all the novelty inherent in the device as broadly as is permitted by the state of the art.

What I claim as new and desire to secure by Letters Patent, is 2- In a vulcanizer, the combination with two pivoted sheet-metal members crossing each other between their ends and mutually pivoted, one of said members being U-shaped in cross-section to receive conducting wires and terminating in a sheet-metal heating box carrying an electric resistance element, a

' pressure-plate formed with rounded buttons mounted to rock on the end of the other member to oppose said box, and means to hold the corresponding ends of said members in forcibly pressed relation with each other, for the purpose set forth.

In testimony whereof I have hereunto set my hand this 21st day of February, 1913. CARL A. PFANSTIEIIL. In presence of- NELLIE B. Dnimnoim, A. C. FISCHER. 

